<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{{.Title}}</title>
</head>
<body>
<p>hello,{{.Name}}</p>

{{if gt .Age 18}}
<p>hello,old man,{{.Name}}</p>
{{else}}
<p>hello, young man,{{.Name}}</p>
{{end}}
</body>
</html>